一个算术函数和Smarandache无理根筛数列的性质

设p为素数,ep(n)表示n中包含素数p的最大指数.主要研究ep(n)作用在无理根筛数列上的均值性质,并给出一个有趣的渐近公式.     

关于算术函数ep(n)的一个均值性质

设p为素数,ep(n)表示n中包含素数p的最大指数.主要研究函数ep(n)作用在无m次因子数列上的均值性质,并给出一个有趣的渐近公式.     

一个数论函数的均值公式

p为素数,ep(n)表示n的标准分解式中p的指数。应用初等的方法和解析的方法研究了∑n≤x ep(n)d(n)的均值性质,并得到了一个有趣的渐近公式。     

一个算术函数和正整数的k次根的整部

对于任意正整数n,定义ak(n) 为n的k的次根的整部,设p为一素数,ep(n) 为整除n的p的最大指数,研究了ep(ak(n))的均值性质,并给出了一个有趣的渐近公式.     

关于2个算术函数的一个混合均值

设素数p,ep(n)表示整除n的p最大指数,即ep(n)=max{α∶pα|n}.对任意正整数n,k≥2为给定整数,Smarandache Ceil函数的对偶函数Sk(n)=max{x∶x N,xk|n},利用解析的方法,研究了算术函数ep(n)Sk(n)均值分布性质,并给出一个渐近公式.     

一个复合函数的均值公式

p为一给定素数,ep(n)表示n的标准分解式中p的指数,a(n)表示n的加法k次幂补数.用初等方法研究了复合函数ep(n+a(n))的算术性质,得到了一个较好的均值公式,丰富了加法补函数的性质.     

关于一个复合函数的均值

p为一素数,ep(n)表示n的标准分解式中p的指数,b(n)表示正整数n的平方补数。用初等和解析方法研究了∑n≤xpeq(b(n))的均值性质,得到了它的渐近公式。     

一个数论函数均值余项的改进

设p为素数,ep(n)表示的标准分解式中p的指数,设d(n)为Dirichlet除数函数.应用初等方法得到了∑n≤xep(n)d(n)的一个更加精确的均值公式,从而改进了相关文献中的对应结果.     

关于不定方程x~3+5~3=2Ry~2

设R=p1 p2 Q,Q=r i(n∈Z),ri-1(mod6)(1≤i≤n)为互异的奇素数,p1≡p2≡1(mod 6)为奇素数。运用初等方法得出了不定方程x 3+53=2Ry 2无正整数解的一个充分条件。     

关于Euler函数的Makowski猜想

对于正整数n,设φ(n)是n的Euler函数.该文证明了:如果φ(n 3)=φ(n) 2,则n=2pr或2pr-3,其中p是适合p≡3(mod 4)的素数,r是正整数.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with